#This file is part of Tryton.  The COPYRIGHT file at the top level of
#this repository contains the full copyright notices and license terms.
import unittest
import doctest
from decimal import Decimal
import datetime
from dateutil.relativedelta import relativedelta
import trytond.tests.test_tryton
from trytond.tests.test_tryton import POOL, DB_NAME, USER, CONTEXT, test_view,\
    test_depends
from trytond.transaction import Transaction


class StockForecastTestCase(unittest.TestCase):
    'Test StockForecast module'

    def setUp(self):
        trytond.tests.test_tryton.install_module('stock_forecast')
        self.category = POOL.get('product.category')
        self.uom = POOL.get('product.uom')
        self.template = POOL.get('product.template')
        self.product = POOL.get('product.product')
        self.location = POOL.get('stock.location')
        self.company = POOL.get('company.company')
        self.user = POOL.get('res.user')
        self.forecast = POOL.get('stock.forecast')
        self.line = POOL.get('stock.forecast.line')
        self.move = POOL.get('stock.move')

    def test0005views(self):
        'Test views'
        test_view('stock_forecast')

    def test0006depends(self):
        'Test depends'
        test_depends()

    def test0020distribute(self):
        'Test distribute'
        for values, result in (
                ((1, 5), {0: 5}),
                ((4, 8), {0: 2, 1: 2, 2: 2, 3: 2}),
                ((2, 5), {0: 2, 1: 3}),
                ((10, 4), {0: 0, 1: 1, 2: 0, 3: 1, 4: 0,
                        5: 0, 6: 1, 7: 0, 8: 1, 9: 0}),
                ):
            self.assertEqual(self.line.distribute(*values), result)

    def test0030create_moves(self):
        'Test create_moves'
        with Transaction().start(DB_NAME, USER, context=CONTEXT):
            category, = self.category.create([{
                        'name': 'Test create_moves',
                        }])
            unit, = self.uom.search([('name', '=', 'Unit')])
            template, = self.template.create([{
                        'name': 'Test create_moves',
                        'type': 'goods',
                        'category': category.id,
                        'cost_price_method': 'fixed',
                        'default_uom': unit.id,
                        'list_price': Decimal('1'),
                        'cost_price': Decimal(0),
                        }])
            product, = self.product.create([{
                        'template': template.id,
                        }])
            customer, = self.location.search([('code', '=', 'CUS')])
            warehouse, = self.location.search([('code', '=', 'WH')])
            storage, = self.location.search([('code', '=', 'STO')])
            company, = self.company.search([
                    ('rec_name', '=', 'Dunder Mifflin'),
                    ])
            self.user.write([self.user(USER)], {
                    'main_company': company.id,
                    'company': company.id,
                    })

            today = datetime.date.today()

            forecast, = self.forecast.create([{
                        'warehouse': warehouse.id,
                        'destination': customer.id,
                        'from_date': today + relativedelta(months=1, day=1),
                        'to_date': today + relativedelta(months=1, day=20),
                        'company': company.id,
                        'lines': [
                            ('create', [{
                                        'product': product.id,
                                        'quantity': 10,
                                        'uom': unit.id,
                                        'minimal_quantity': 2,
                                        }],
                                ),
                            ],
                        }])
            self.forecast.confirm([forecast])

            self.forecast.create_moves([forecast])
            line, = forecast.lines
            self.assertEqual(line.quantity_executed, 0)
            self.assertEqual(len(line.moves), 5)
            self.assertEqual(sum(move.quantity for move in line.moves), 10)

            self.forecast.delete_moves([forecast])
            line, = forecast.lines
            self.assertEqual(len(line.moves), 0)

            self.move.create([{
                        'from_location': storage.id,
                        'to_location': customer.id,
                        'product': product.id,
                        'uom': unit.id,
                        'quantity': 2,
                        'planned_date': today + relativedelta(months=1, day=5),
                        'company': company.id,
                        'currency': company.currency.id,
                        'unit_price': Decimal('1'),
                        }])
            line, = forecast.lines
            self.assertEqual(line.quantity_executed, 2)

            self.forecast.create_moves([forecast])
            line, = forecast.lines
            self.assertEqual(line.quantity_executed, 2)
            self.assertEqual(len(line.moves), 4)
            self.assertEqual(sum(move.quantity for move in line.moves), 8)


def suite():
    suite = trytond.tests.test_tryton.suite()
    from trytond.modules.company.tests import test_company
    for test in test_company.suite():
        if test not in suite and not isinstance(test, doctest.DocTestCase):
            suite.addTest(test)
    suite.addTests(unittest.TestLoader().loadTestsFromTestCase(
            StockForecastTestCase))
    return suite
